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Finding the Fourth Proportional to 936.99, 1,403.03 and 819.34

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Solution

The fourth proportional to 936.99, 1,403.03 and 819.34 is: 1,226.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.99 : 1,403.03 = 819.34 : x
  2. Step 2: Convert to fraction form
    936.99/1,403.03 = 819.34/x
  3. Step 3: Cross multiply
    936.99x = 1,403.03 × 819.34
  4. Step 4: Simplify right side
    936.99x = 1,149,557.14
  5. Step 5: Solve for x
    x = 1,149,557.14/936.99
  6. Step 6: Final answer
    x = 1,226.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.